barium
英 ['be?r??m]
美['b?r??m]
- n. [化學] 鋇（一種化學元素）
暢通詞匯
中文詞源
barium 鋇
來自詞根bar, 重，同gravity, 重力。因該金屬元素在同類金屬中相對較重而命名。
英文詞源
- barium
- barium: see gravity
- barium (n.)
- 1808, coined in Modern Latin by its discoverer, English chemist Sir Humphrey Davy (1778-1829), because it was present in the mineral barytes "heavy spar" (barium sulphate), so named by Lavoisier from Greek barys "heavy," from PIE root *gwere- (2) "heavy" (see grave (adj.)). The metal is actually relatively light.
雙語例句
- 1. Explain why barium forms peroxide but beryllium does not.
- 解釋為什么鋇能形成過氧化物而鈹則不能。
來自辭典例句
- 2. Common ceramic elements are barium titanate and lead zirconate - titanate.
- 普通的陶瓷元件分別是鈦酸鋇和鋯鈦酸鉛.
來自辭典例句
- 3. There is reflux of barium into the terminal ileum.
- 鋇劑反流進入回腸末端.
來自辭典例句
- 4. Barium is found in some oilfield brines in concentrations greater than 100 mg / litre.
- 在有些油田鹵水中,鋇的濃度大于100毫克/升.
來自辭典例句
- 5. Diagnosis can usually be made by barium swallow and tracheogram.
- 確診要靠鋇餐和氣管造影.
來自辭典例句